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Introducing bioZen HPLC/UHPLC Columns

With a new titanium hardware to minimize priming, three particle platforms for optimal versatility and eight particle chemistries to maximize selectivity and sensitivity, bioZen UHPLC/HPLC columns are seamlessly designed to bring peace of mind to your

Aggregate Analysis

Quantitation of aggregate is a critical quality attribute in biopharmaceutical development. The determination of monomer, dimer, and multimer, as well as higher order structure (quaternary structural determination of a mAb), and high/low molecular weight species are commonly observed through size exclusion chromatography.

Drug Antibody Ratio (DAR)

The average drug-to-antibody ratio (DAR) is critical to assess in the development of antibody-drug conjugates (ADCs). Though different chromatography modes can be employed to determine DAR, a highly effective method utilized reversed phase chromatography.

Glycan Analysis

Glycosylation of proteins-specifically monoclonal antibodies-have indications on protein structure and is arguably the most critical post-translational modification to characterize in biopharmaceutical development. N-glycan analysis through hydrophilic interaction chromatography (HILIC) is a robust method for absolute quantitation of glycoforms and is the gold standard for glycosylation characterization.

For protein characterization, peptide mapping is commonly used for identification of non-enzymatic, spontaneous post translational modifications, such as deamidation, oxidation, succinimide formation, pyroglutamate formation, and others. Reversed phase chromatography is used for confirming primary sequence, but is more commonly for PTM identification.

Peptide Quantitation

The determination of signature peptide concentration from biological matrices using LC-MS. Scientists utilize peptide quantitation to deconvolute complex chromatograms by searching for specific peptide sequences, which can analyze the peptides with high sensitivity and specificity, even at low levels of peptide.

Charge Variant Analysis (IEX)

Separate MABs from from acidic/basic variants .

Whether you are working with

novel proteins

Complex large molecules composed of amino acid polymer chains. Proteins in biopharmaceuticals typically range from 3,000-150,000 kDa. Under the biologics classification, biopharmaceutical proteins can be hormones, human growth factors, and monoclonal antibodies (mAbs). The most common biopharmaceutical proteins are insulin and mAbs.

or biosimilars,

A biologic with the same sequence and similar function to an innovator biologic. The characterization of biosimilars requires the same chromatographic techniques as its corresponding innovator biologic